Invoice cut off dates for fiscal year end or could be at month end as well.

Wondering how others might deal with this issue. At the end of our fiscal year we are processing invoices that will be posting into the old fiscal year as well as the new fiscal year for some time period. With all approved invoices being extracted on a nightly basis, how are different companies determining which fiscal year those expenses belong given data in Concur? Do you use fields in concur to help with this, do you use reporting. Looking for all examples. Thank you.